A5002370797- Advanced Fiber Laser Technologies
- Quantum optics and atomic interactions
- Superconducting and THz Device Technology
- Advanced Frequency and Time Standards
- Radio Astronomy Observations and Technology
Beijing Institute of Technology
2023
Ministry of Industry and Information Technology
2023
Large-aperture, single-dish, submillimeter (sub-mm)-wave telescopes are important to our understanding of the universe, but it is a long-term outstanding challenge make single-dish sub-mm larger while keeping high accuracy their surfaces. A bottleneck in context size and operating wavelengths such deterioration wavefront errors (phase shift) due deformation reflective Here proposed phase adaptive stabilization system (PASS), functioning as an optics radio frequency (RF), essential tool for...
We demonstrate an ultra-stable wideband signal dissemination scheme suitable for distributed systems. By inserting a 26 GHz probe whose round-trip delay variation is precisely measured with double optical mixing, the link length has been accurately detected. Assisted well-designed homodyne phase locked loop, time stability on order of femtosecond hours and fractional frequency 8.3 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−18</sup> at...